DP8303N Am 7303 Am 8303 Am 8303

CHARACTERISTICS

• 8-bit bidirectional data flow reduces system package count

• 3-state inputs/outputs for interfacing with bus-oriented systems

• PNP inputs reduce input loading

• Vcc  -1.1SV VoH interfaces with TTL, MOS and CMOS

• 48mA, 300pF bus drive capability

• Am73/8303  inverting transceivers

• Am73/8304B  noninverting transceivers

• Transmit/Receive  and Chip Disable simplify contrai logie

• 20-pin ceramic and molded DIP package

• Low power - 8mA per bidirectional bit

• Advanced Schottky processing

• Bus port stays in hi-impedance state during power up/down

• 100% produci assurance screeninglo MIL-STD-883 requirements

FUNCTIONAL  DESCRIPTION

The DP8303N Am73/8303 and Am73/8304B are 8-bit 3-State Schottky transceivers. They previde bidirectional drive for bus-oriented microprocessor and digitai communications systems. Straight through bidirectional transceivers are featured, with 16mA drive capability on the A ports and 48mA bus drive capability on the B ports. PNP inputs are incorporateci to reduce input loading.

One input, TransmiVReceive determines the direction of logie signals through the bidirectional transceiver. The Chip Disable input disables both A and B ports by placing them in a 3-state condition. Chip Disable is functionally the same as an active LOW chip select.

The output high voltage (VoH) is specified at Vcc -1.1SV minimum to allow interfacing with MOS, CMOS, TTL, ROM, RAM, or microprocessors.